This is another photo I took from my FB,nice close-up :
Boulton Paul Defiant Mark I night fighter, N1801 'PS-B' "Coimbatore II", of No. 264 Squadron RAF, undergoing a routine service in a dispersal, probably at Colerne, Wiltshire. This aircraft was flown by the effective night-fighting team of Flying Officer F D Hughes (pilot) and Sergeant F Gash (gunner), and displays a victory tally of 5 enemy aircraft shot down. In 1942 Hughes converted to the Bristol Beaufighter and, flying with Nos. 125 and 600 Squadrons RAF, further increased his score. By the end of the war, he commanded No 604 Squadron RAF and had destroyed 18.5 enemy aircraft. 

Defiant nightfighter

Boulton Paul Defiant TT Mark I, DR863, on the ground at the Boulton Paul Aircraft Ltd aerodrome, Wolverhampton. Following tests at the Aeroplane and Armament Experimental Establishment, the aircraft joined the Gunnery Research Unit at Exeter. © IWM (ATP 10751B)
Found this photo with above caption on my FB page.The small 4 bladed prop is part of the mechanism for the target winch explained another poster .Still don't know exactly what to make of that.Excuse my ignorance but can anyone explain how that works?Thank you :)
greetz,brummbar

Defiant

Two British soldiers at the window of a ruined house in northern Africa. The soldier on the left is armed with a Thompson submachine gun (M1928), US production, the other, on the right - presumably - a captured 7.92 mm Mauser 98k rifle.